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Patent US2797754A successfully refreshed from Google Patents.
US2797754A
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Apparatus for broaching die apertures in a rotary film perforator
Assignee: Eastman Kodak Co
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Filing: 1955-07-26
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Granted: 1957-07-02
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Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 Bornemann William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:34
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; B26F1/06; B21; B21D; B21D28/00; B21D28/24; B21D28/36; B26F1/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49861; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/4812; Y10T83/483; Y10T83/4836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1649635A
Cited
US1984737A
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DE627356C
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US2085864A
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US2206138A
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US2522154A
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US2623417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |